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Astronomy Chemical element

Nitrogen

Nitrogen (N) is a non-metal with atomic number 7 and atomic mass 14.007 u. This data sheet describes its fundamental properties, position in the periodic table and main physical characteristics.

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Astronomy · Chemical element

Nitrogen

EL7

Identity

  • Name: Nitrogen
  • Symbol: N
  • Atomic number: 7
  • Atomic mass: 14.007 u

Position in the periodic table

  • Group: 15 (VA)
  • Period: 2
  • Category: Non-metal

Physico-chemical properties

  • Standard state: Gas
  • Melting point: −210.00 °C
  • Boiling point: −195.79 °C
  • Density (0 °C, 1 atm): 1.2506 g/L
  • Electron configuration: 1s² 2s² 2p³

Scientific description

Nitrogen exists as a diatomic molecule N₂ under standard conditions. This colourless, odourless gas is relatively inert at room temperature due to the extreme strength of the N≡N triple bond.